There is no lack of opportunities in any of the medical field. What one must go for is a department they are passionate for as they need to be with it for the next 40 years.

If one wants to own an clinic and is more technology oriented, Radiotherapy may be the choice. With new modern advents in area of cancer, new therapies with precision and less side effects are constantly being updated and hence the branch surges of constant growth.

If someone wants to see patients like that of medicine and loves diagnosing problems, ortho may be the choice.

if you believe in working behind the curtains without requiring much fame, then go for Anaesthesia.